- Akowa, ambai, Ambaiba palmate, ambaibo (Spanish), ambiabo, bois canon (French), bois trompette (French), Cecropiaceae (family), Cecropia amphichlora, Cecropia arachnoidea, Cecropia asperrima, Cecropia concolor, Cecropia dielsiana, Cecropia hondurensis, Cecropia mexicana, Cecropia obtusifolia,
Cecropia obtusifolia Bertol, Cecropia pachystachya, Cecropia scabrifolia, Cecropia schreberiana, Cecropia surinamensis, certico, chancarpo, chancarro (Spanish), chlorogenic acid, embauba, golden trumpet tree, grayumbe, grayumbo, guarumbo (Spanish), guarumo (Spanish), hormigo, hormiguillo (Spanish), imbauba (Spanish), isoorientin, palo lija, pink trumpet tree, pop-a-gun, snakewood tree, tree-of-laziness, tree-of-sandpaper, trompette (French), trompettier, Trompetenbaum (German), trumpet tree, umbauba, yagruma (Spanish), yagrumo (Spanish), yaluma.
Note: The term “trumpet tree” has been applied to species of several genus, including Cecropia; however, plants of the genus Tabebuia are most commonly referred to as such. For information about Tabebuia, please refer to the monograph on pau d’arco. The data contained in this monograph are mainly concerned with Cecropia
obtusifolia, although research on other Cecropia species has been noted where deemed relevant.
- Guarumo, or Cecropia obtusifolia (Cecropiaceae), is a fruit-bearing tree that grows in the tropical Americas. Its leaves are used in folk medicine for the treatment of type 2 diabetes mellitus. A number of closely related Cecropia species (including Cecropia peltata, Cecropia palmate, and Cecropia obtusifolia) are similar in appearance, chemical makeup, and traditional medicinal uses.
- Traditionally, Cecropia obtusifolia has been used by Palikur indigenous tribes in Guyana and the Amazon basin, as well as by traditional healers in Cuba and other parts of Central and South America, for various ailments, including arteriosclerosis (hardening of the arteries), asthma, bone fractures, bruises, diarrhea, fever, genitalia infections, gonorrhea, herpes, kidney disorders, liver disorders, mouth and tongue sores, obesity, Parkinson’s disease, rheumatic inflammation, skin diseases, warts, and wounds. Animal studies suggest that Cecropia obtusifolia leaf extracts may lower blood pressure and have diuretic effects.
- Human studies suggest that Cecropia obtusifolia may reduce blood sugar levels in some patients with type 2 diabetes. However, additional research is needed to confirm these findings.
These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider.
*Key to grades:
The below uses are based on tradition, scientific theories, or limited research. They often have not been thoroughly tested in humans, and safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. There may be other proposed uses that are not listed below.
Adults (18 years and older)
- There is no proven safe or effective dose of guarumo in adults. Various doses have been studied.
- Based on traditional use for respiratory disease and asthma, one cup of standard leaf aqueous extract has been taken 2-3 times daily with each meal.
- For type 2 diabetes, 13.5 grams of dried and milled leaves of Cecropia obtusifolia has been boiled for five minutes in 1 liter of water to create an aqueous leaf extract containing 2.91 milligrams of chlorogenic acid and 2.4 milligrams of isoorientin. This has been administered daily for up to 32 weeks. Three grams of aqueous leaf extract containing 2.99 Â± 0.14 milligrams of chlorogenic acid per gram of dried plant has also been used for 21 days.
Children (under 18 years old)
- There is no proven safe or effective dose for guarumo in children.
The below doses are based on scientific research, publications, traditional use, or expert opinion. Many herbs and supplements have not been thoroughly tested, and safety and effectiveness may not be proven. Brands may be made differently, with variable ingredients, even within the same brand. The below doses may not apply to all products. You should read product labels, and discuss doses with a qualified healthcare provider before starting therapy.
- Avoid in individuals with known allergy/hypersensitivity to Cecropia obtusifolia, its constituents, or other members of the Cecropiaceae family.
Side Effects and Warnings
- Guarumo has been well tolerated in humans. Increased salivation, heartburn, and tiredness have been reported.
- Guarumo may stimulate menstruation and childbirth and should be avoided in pregnant women.
- Although not well studied in humans, guarumo has been shown to decrease blood pressure and increase heart rate after injection. Use cautiously in patients with low blood pressure or those who take agents to lower blood pressure
- Guarumo may lower blood sugar levels. Caution is advised in patients with diabetes or hypoglycemia, and in those taking drugs, herbs, or supplements that affect blood sugar. Blood glucose levels may need to be monitored by a qualified healthcare professional, including a pharmacist, and medication adjustments may be necessary.
- Use cautiously in patients using diuretics, due to possible additive effects.
- Use cautiously in patients using central nervous system depressants, due to possible additive effects.
Pregnancy and Breastfeeding
- Avoid in pregnant women, as guarumo may induce menstruation and childbirth.
The U.S. Food and Drug Administration does not strictly regulate herbs and supplements. There is no guarantee of strength, purity or safety of products, and effects may vary. You should always read product labels. If you have a medical condition, or are taking other drugs, herbs, or supplements, you should speak with a qualified healthcare provider before starting a new therapy. Consult a healthcare provider immediately if you experience side effects.
Interactions with Drugs
- Guarumo may lower blood sugar levels. Caution is advised when using medications that may also lower blood sugar. Patients taking drugs for diabetes by mouth or insulin should be monitored closely by their qualified healthcare professionals, including pharmacists. Medication adjustments may be necessary.
- Guarumo may cause low blood pressure. Caution is advised in patients taking medications that lower blood pressure.
- Guarumo may have additive effects with analgesics (pain relievers), anti-inflammatory agents, cholesterol-lowering medications, central nervous system depressants, diuretics, and skeletal muscle relaxants.
Interactions with Herbs and Dietary Supplements
- Guarumo may lower blood sugar levels. Caution is advised when using herbs or supplements that may also lower blood sugar. Blood sugar levels may require monitoring, and doses may need adjustment.
- Guarumo may cause low blood pressure. Caution is advised in patients taking herbs or supplements that lower blood pressure.
- Guarumo may have additive effects with analgesics (pain relievers), anti-inflammatory herbs and supplements, cholesterol-lowering herbs and supplements, central nervous system depressants, diuretics, and skeletal muscle relaxants.
Most herbs and supplements have not been thoroughly tested for interactions with other herbs, supplements, drugs, or foods. The interactions listed below are based on reports in scientific publications, laboratory experiments, or traditional use. You should always read product labels. If you have a medical condition, or are taking other drugs, herbs, or supplements, you should speak with a qualified healthcare provider before starting a new therapy.
- This information is based on a systematic review of scientific literature edited and peer-reviewed by contributors to the Natural Standard Research Collaboration ().
- Toledo, VM, Tellez, MG, Sortibran, AN, et al. Genotoxicity testing of Cecropia obtusifolia extracts in two in vivo assays: the wing somatic mutation and recombination test of Drosophila and the human cytokinesis-block micronucleus test. J Ethnopharmacol 2-28-2008;116(1):58-63.
- Herrera-Arellano, A, Aguilar-Santamaria, L, Garcia-Hernandez, B, et al. Clinical trial of Cecropia obtusifolia and Marrubium vulgare leaf extracts on blood glucose and serum lipids in type 2 diabetics. Phytomedicine 2004;11(7-8):561-566.
- Revilla-Monsalve, MC, Andrade-Cetto, A, Palomino-Garibay, MA, et al. Hypoglycemic effect of Cecropia obtusifolia Bertol aqueous extracts on type 2 diabetic patients. J Ethnopharmacol 5-22-2007;111(3):636-640.
- Perez-Guerrero, C, Herrera, MD, Ortiz, R, et al. A pharmacological study of Cecropia obtusifolia Bertol aqueous extract. J Ethnopharmacol 2001;76(3):279-284.
Natural Standard developed the above evidence-based information based on a thorough systematic review of the available scientific articles. For comprehensive information about alternative and complementary therapies on the professional level, go to . Selected references are listed below.